Crate xcm_builder

XCM-Builder

Types and helpers for building XCM configuration.

Modules

• test_utils

Structs

• Account32Hash
• AccountId32Aliases
  Extracts the AccountId32 from the passed location if the network matches.
• AccountKey20Aliases
• AllowKnownQueryResponses
  Allows only messages if the generic ResponseHandler expects them via expecting_response.
• AllowSubscriptionsFrom
  Allows execution from origin if it is just a straight SubscribeVerison or UnsubscribeVersion instruction.
• AllowTopLevelPaidExecutionFrom
  Allows execution from origin if it is contained in T (i.e. T::Contains(origin)) taking payments into account.
• AllowUnpaidExecutionFrom
  Allows execution from any origin that is contained in T (i.e. T::Contains(origin)) without any payments. Use only for executions from trusted origin groups.
• AsPrefixedGeneralIndex
  Converter struct implementing AssetIdConversion converting a numeric asset ID (must be TryFrom/TryInto<u128>) into a GeneralIndex junction, prefixed by some MultiLocation value. The MultiLocation value will typically be a PalletInstance junction.
• BackingToPlurality
  Convert implementation to convert from some an origin which implements Backing into a corresponding Plurality MultiLocation.
• Case
  Accepts an asset if it is contained in the given T’s Get implementation.
• ChildParachainAsNative
• ChildParachainConvertsVia
• ChildSystemParachainAsSuperuser
• ConvertedAbstractAssetId
• ConvertedConcreteAssetId
• CurrencyAdapter
  Simple adapter to use a currency as asset transactor. This type can be used as type AssetTransactor in xcm::Config.
• EnsureXcmOrigin
  EnsureOrigin barrier to convert from dispatch origin to XCM origin, if one exists.
• FixedRateOfConcreteFungibleDeprecated
  Simple fee calculator that requires payment in a single concrete fungible at a fixed rate.
• FixedRateOfFungible
  Simple fee calculator that requires payment in a single fungible at a fixed rate.
• FixedWeightBounds
• FungiblesAdapter
• FungiblesMutateAdapter
• FungiblesTransferAdapter
• IsAbstract
  Same as IsConcrete but for a fungible with abstract location.
• IsChildSystemParachain
  Allows a message only if it is from a system-level child parachain.
• IsConcrete
  Converts a MultiAsset into balance B if it is a concrete fungible with an id equal to that given by T’s Get.
• LocationInverter
  Simple location inverter; give it this location’s ancestry and it’ll figure out the inverted location.
• NativeAsset
  Accepts an asset iff it is a native asset.
• OriginToPluralityVoice
  Convert implementation to convert from an origin which passes the check of an EnsureOrigin into a voice of a given pluralistic Body.
• ParentAsSuperuser
• ParentIsPreset
  A MultiLocation consisting of a single Parent [Junction] will be converted to the parent AccountId.
• RelayChainAsNative
• SiblingParachainAsNative
• SiblingParachainConvertsVia
• SiblingSystemParachainAsSuperuser
• SignedAccountId32AsNative
• SignedAccountKey20AsNative
• SignedToAccountId32
  Convert implementation to convert from some a Signed (system) Origin into an AccountId32.
• SovereignSignedViaLocation
  Sovereign accounts use the system’s Signed origin with an account ID derived from the LocationConverter.
• TakeWeightCredit
  Execution barrier that just takes max_weight from weight_credit.
• UsingComponents
  Weight trader which uses the TransactionPayment pallet to set the right price for weight and then places any weight bought into the right account.
• WeightInfoBounds

Traits

• TakeRevenue
  Function trait for handling some revenue. Similar to a negative imbalance (credit) handler, but for a MultiAsset. Sensible implementations will deposit the asset in some known treasury or block-author account.